diff --git a/addons/purchase_requisition/__openerp__.py b/addons/purchase_requisition/__openerp__.py
index c63995a649a..0b239c23853 100644
--- a/addons/purchase_requisition/__openerp__.py
+++ b/addons/purchase_requisition/__openerp__.py
@@ -28,7 +28,7 @@
     When a purchase order is created, you now have the opportunity to save the related requisition.
     This new object will regroup and will allow you to easily keep track and order all your purchase orders.
 """,
-    "depends" : ["purchase","mrp"],
+    "depends" : ["purchase"],
     "init_xml" : [],
     "demo_xml" : ['purchase_requisition_demo.xml'],
     "update_xml" : ["security/purchase_tender.xml",
diff --git a/addons/purchase_requisition/purchase_requisition.py b/addons/purchase_requisition/purchase_requisition.py
index a3b80f83c0f..c412f195ef4 100644
--- a/addons/purchase_requisition/purchase_requisition.py
+++ b/addons/purchase_requisition/purchase_requisition.py
@@ -123,6 +123,7 @@ class purchase_order(osv.osv):
     def wkf_confirm_order(self, cr, uid, ids, context=None):
         res = super(purchase_order, self).wkf_confirm_order(cr, uid, ids, context=context)
         proc_obj = self.pool.get('procurement.order')
+        requisition_obj = self.pool.get('purchase.requisition')
         for po in self.browse(cr, uid, ids, context=context):
             if po.requisition_id and (po.requisition_id.exclusive=='exclusive'):
                 for order in po.requisition_id.purchase_ids:
@@ -132,7 +133,7 @@ class purchase_order(osv.osv):
                             proc_obj.write(cr,uid,proc_ids,{'purchase_id':po.id})
                         wf_service = netsvc.LocalService("workflow")
                         wf_service.trg_validate(uid, 'purchase.order', order.id, 'purchase_cancel', cr)
-                    self.pool.get('purchase.requisition').write(cr, uid, [po.requisition_id.id], {'state':'done','date_end':time.strftime('%Y-%m-%d %H:%M:%S')})
+                    requisition_obj.write(cr, uid, [po.requisition_id.id], {'state':'done','date_end':time.strftime('%Y-%m-%d %H:%M:%S')})
         return res
 
 purchase_order()
@@ -157,12 +158,13 @@ class procurement_order(osv.osv):
     }
     def make_po(self, cr, uid, ids, context=None):
         sequence_obj = self.pool.get('ir.sequence')
+        requisition_obj = self.pool.get('purchase.requisition')
         res = super(procurement_order, self).make_po(cr, uid, ids, context=context)
         for proc_id, po_id in res.items():
             procurement = self.browse(cr, uid, proc_id, context=context)
             requisition_id=False
             if procurement.product_id.purchase_requisition:
-                requisition_id=self.pool.get('purchase.requisition').create(cr, uid, {
+                requisition_id = requisition_obj.create(cr, uid, {
                     'name': sequence_obj.get(cr, uid, 'purchase.order.requisition'),
                     'origin': procurement.name,
                     'date_end': procurement.date_planned,